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Finding the Fourth Proportional to 35,647.44, 53,453.16 and 20,860.80

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Solution

The fourth proportional to 35,647.44, 53,453.16 and 20,860.80 is: 31,280.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,647.44 : 53,453.16 = 20,860.80 : x
  2. Step 2: Convert to fraction form
    35,647.44/53,453.16 = 20,860.80/x
  3. Step 3: Cross multiply
    35,647.44x = 53,453.16 × 20,860.80
  4. Step 4: Simplify right side
    35,647.44x = 1,115,075,680.13
  5. Step 5: Solve for x
    x = 1,115,075,680.13/35,647.44
  6. Step 6: Final answer
    x = 31,280.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.